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Finding the Fourth Proportional to 553,584.20, 764,002.62 and 338,866.16

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Solution

The fourth proportional to 553,584.20, 764,002.62 and 338,866.16 is: 467,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,584.20 : 764,002.62 = 338,866.16 : x
  2. Step 2: Convert to fraction form
    553,584.20/764,002.62 = 338,866.16/x
  3. Step 3: Cross multiply
    553,584.20x = 764,002.62 × 338,866.16
  4. Step 4: Simplify right side
    553,584.20x = 258,894,630,249.33
  5. Step 5: Solve for x
    x = 258,894,630,249.33/553,584.20
  6. Step 6: Final answer
    x = 467,669.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.